Bài 1.
meet -> met enjoy -> enjoyed
help -> helped drive -> drove
speak -> spoke plan -> planned
live -> lived put -> put
write -> wrote stop -> stopped
study -> studied sing -> sang
do -> did agree -> agreed
cry -> cried sit -> sat
stand -> stood borrow -> borrowed
play -> played run -> ran
stay -> stayed begin -> began
ask -> asked break -> broke
laugh -> laughed bring -> brought
try -> tried build -> built
tidy -> tidied buy -> bought
Bài 2.
1. was
2. were
3. was
4. were
5. was
6. was
7. were
8. was
9. was
10. were
11. were
12. were
13. was
14. was
15. were
Bài 3.
1. (-) He didn't write a book.
(?) Did he write a book?
2. (-) She wasn't my boss.
(?) Was she your boss?
3. (+) They built a new house
(?) Did they build a house?
4. (+) I was at the concert last Sunday.
(?) Were you at the concert last Sunday?
5. (+) I bought clothes in this clothes shop.
(-) I didn't buy clothes in this clothes shop.
6. (+) They were born in Korea.
(-) They weren't born in Korea.
7. (-) He didn't swim in the lake.
(?) Did he swim in the lake?
8. (-) We weren't at the gym last week.
(?) Were you at the gym last week?
9. (+) She went to her office by car.
(?) Did she go to her office by car?
10. (+) He was a good boy.
(?) Was he a good boy?
Bài 4.
1. C
2. C
3. A
4. D
5. C
6. D
7. A
8. B
9. C
10. B
11. D
12. A
13. B
14. C
Chúc bạn học tốt!